1981 R.L. Mumme Melanerpes formicivorus Road 1 20 (14 April) 0830 9383 enters nest, leaves 0833. 0850 8294 enters (leaves <10 second) 0915 9269 enters nest, 0919 8486 enters, 0926 8486 leaves 0929 9269 looks out, 9383 comes to hole, waltzas exchanged, no aggression. 9269 leaves, 9383 enters. 0940, 9383 leaves. Nest checks 0940-1010. Egg laid by 9269 25.2 X 19.4 were measurements. Mary reports nothing at Valley Oak hole. 1040, on PO Hill, I search the anvil in the 1st granary where I saw 9269 place this mornings tossed egg. No evidence, but then 8580 manipulates a large piece of eggshell, then eats (?) abit, End watch 1100. Roosting. I find 9269 ad a 8 (486?) in the 1st granary as I arrive. Later, another 8 shows up. Some confusion, one 8 attempts to mount 9269, but the other 8 flies down to the branch, and no copulation occurs. (As always, the 8 mounted the 8 first). After some more milling around, the birds took off to the 2nd granary as a unit of 3. Doesn't make much sense if 486 is still having exclusive contact with the 8 during the day 21 April Start watch at nest 0640. A bird in the hole as I walk up. 0646 9383 enters, leaves 0655 (laid egg?). 0701-0710 8486, 9269 9383, 9269, all look in, doubtuter. 0719 8? (294) enters. 0719, 8594 replaces. 8579 leave 0720 0728 9269 enters, leaves 0734 0747 9383 enters. 0752 9269 replaces, 0801 9269 cares